Table 1.
Knockdown (KD) rate at 60 min and mortality rate of An. gambiae Kisumu strain after 3 min exposure to treated nets following WHO standard procedures (WHO 2013) run before washes (28/09/2012), after the three washes (10/10/2012), and after the trial (13/11/2012).
| Treatment | Before any washing |
After three washes and prior to field trial |
After washing and field trial |
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|---|---|---|---|---|---|---|---|---|---|
| N | % KD (60 min) | % Mort. (24 h) | N | % KD (60 min) | % Mort. (24 h) | N | % KD (60 min) | % Mort. (24 h) | |
| Control (Untreated net) | 49 | 0a,1 | 0a,1 | 50 | 0a,1 | 0a,1 | 55 | 2a,1 | 2a,1 |
| Pyriproxyfen treated LN | 46 | 0a,1 | 0a,1 | 54 | 0a,1 | 0a,1 | 50 | 0a,1 | 0a,1 |
| Olyset Net | 50 | 100b,3 | 22b,2 | 50 | 44b,2 | 0a,1 | 61 | 62b,2 | 13b,2 |
| Olyset Duo | 48 | 100b,1 | 100c,3 | 50 | 100c,1 | 66b,1 | 49 | 96c,1 | 78c,2 |
N: Number of females tested, KD: Knockdown observed 60 min after exposure; Mort.: Mortality recorded 24 h post-exposure. Values in the same column sharing the same letter superscript do not differ significantly (p > 0.05) according to χ2 tests. For KD and mortality, values in the same line sharing the same superscript number do not differ significantly (p > 0.05) according to χ2 tests.